Bob-sleigh



(No Model.) -2 Shets-Slliet 1 5.5. SGHROBDERQ BOB SLBIGH.. No. 255,155. `255511555 s511525, 1582.

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.(No Model.) '2 Sheets-Sheet 2.

Y E. C. SOHROEDB-R.

i BoBsLEIGH. v No. 265,155. Patented Sept. 26, 1882.

Egg. 5.

UNITED 4STATES PATENT OFFICE.

ERNEST C. SCHROEDER, F ITASCA, ILLINOIS.

SPECIFICATION forming part of Letters Patent No'. 265,155, dated September 26, 1882. Application tiled May 17, 1882. (No model.)

To all lwhom it may concern Beit known that. I, ERNEsT G. Senaonnna, of Itasca, in the county of Du Page and State' of Illinois, have invented new and useful Improvements in Bob-Sleighs, of which the following is a specification.

My invention relates to improvements in couplings for bob sleighs; and the objects of my improvements are to provide for the independent movements ot' the bobs in riding grades, to prevent springing or breaking of theconnecting parts. and toI render the coupling strong and effective in allowing free movements to the bobs iuevery direction.

' The several mattei-s of improvementwill be specifically pointedout in the claims, and may be briefly stated toconsist in a ball or collar and socket joint coupling adapted for iieXure and rocking movement, to accommodate the bobs to inequalitiesin the surface, and to re- -sist shocks from obstructions.

Referring to the accompanying drawings, Figure 1 represents a side elevation of a bobi sleigh and coupling device embracing my invention; Fig. 2, a top view of the saine, the

bottom ofthe body being shown removed;

A the bolster F to the stool B of the bob.

The rear bob has a front pivoted bar, I, to Vwhich a short tongue, T, is rigidly attached, by which the rear bob is connected to the coupling device.

The bolster-plate A has a dat top, upon which the front bolster, F, proper rests, and both are secured to the stool B of the front bob by a king-bolt, h, upon which the bob and its bolster-plate turn. The bolster-plate has a vertical ring-Harige, a, projecting from its under side, and islsecured by bolts c to the stool, which is bolted to the bob-beams. A ring-collar, C, ts over the vertical flange t of the bolster-plate, between the latter and the stool, and has an arm, u, which terminates in aforked conplin g end, f, Fig. 4, extending over the bob-stool and rising above the top of the bolster-plate, asshown in Fig. 5.

has holes o', and the tongue has corresponding holes, o, through which the bolt t passes .for the purpose of allowing of the adjustment of the rear bob in its relation to the front bob as may be desired.

The cross-bar I is secured to the front ends ot' the rear bob by a pin, k, and forms the jointconnection of the tongue with the rear bob.

The coupling It is bent upward infront ot" the rear bob, and is formed with a horizontal cylindrical part, 19, terminating in a ball or col- 1ar,'o, about on a level with the upper end of the arm u of the holster-'plate ring-collar. The

bobs are coupled by these two devices at their raised ends by means of a coupling-box, D, which is formed with a spherical or partly spherical chamber to receive the ball or collar o, a tubular extension to receive the cylindrical part p of the coupling R, and a crosshead, g, to form a joint-connection with the arm u of ring-collar G of the bolster-plate. The elevated position of the coupling gives clearance for the turning of the front bob upon the king-bolt, as shown by dotted lines in Fig. 2. The coupling-box is preferably made in two sections, Z l', each section having a matching recess forming a chamber, m m', and semi-tubular parts n n', hinged together by a pin, r, and secured together at the tubular extension by lugs and screwss s (shown in Fig. 4) upon the ball or shoulder and cylindrical part ofthe coupling It to form the shoulder and socket-couplin g. This construction forms a durable and convenient means of coupling the bobs with freedom to rock sidewise independently of each other, while the jointcon nection I of the rear bob and the joint-connection i of the coupling-box allow `of the free vertical movements ofthe bobs independently of each other. The boX-couplin g forms a uni-v versal-joint connection with the joints of the tongue and of the collar-rin g, and prevents the binding and straining of the coupling.. I have IOO shown the ball as attened and the chamber of the coupling-box of corresponding form to give a lat or shoulder bearing to what I have called the ball-and-socket joint, but such 5 joint, While providing for the rocking movements of the coupled parts D R upon each other independently or both together, also provides for a slight horizontal movement of the coupling ball or shoulder Within its socket 1o to relieve the shock upon the rear bob coupling connections, as shown in Fig. 5. The coupling parts C D Ithave no lateral flexure upon each, but are held rigidly in line, leaving the bobs free to rock and have vertical 15 movements.

I claiml. The combination, substantially herein described, of the front bob provided with the flanged 4bolsterplate, and the rear bob provided with the coupling R, terminating in a cylindrical neck, and a head or shoulder, With an intermediate chambered box-coupling, D, and the ring collar C f, the several parts being connected to allow of the rolling and verz 5 tical movements of the bobs, as specified.

2. In combination, the flanged bolster-plate A a, the ring-collar C, having a forked arm, u j', the box-couplin g D, having the cross head g, the tubular extension and the 'intermediate chamber, n a, and the coupling R, having the cylindrical neck lo, and the head or shoulder o, whereby to form a coupling for the bobs of a sleigh, substantially as described, for the purpose specied.

3. The coupling-box D, formed with a crosshead, g, and provided with a hinged top section secured to the base section, forming the chamber m m', and the tubular extension n n', in combination with the coupling R p o, the ring-collar G, and the front and rear bobs, all 4o constructed substantially as described, for the purpose specied.

4. In combination, in a bob-sleigh, the crosshead tubular chambered coupling-,box D, the bolster-plate A, having the depending ring- 45 flange a., the ring-collar C, having the forked arm uf, the coupling R, having a cylindrical neck, p, the head o, and a [iat shank, with the rear bobhaving tongue T, provided with a looped shoe, S, andthe coupling-bolt t, all 5o constructed and connected substantially as herein set forth.

ERNEST, CHARLES SCHROEDER.

Witnesses:

LoUls SGHROEDER, CARL AUGUST FRANZEN. 

